Changing clothes in Kochi

I am thinking of volunteering in Kochi, Kerala, India and it all looks good except for one thing: doing laundry by hand. I absolutely HATE this. I would like to minimize doing this so based on the temperature in Kochi around February how long is it possible to go without changing clothes except briefs and still avoid being stinky? I will be spending all my time in the city, not trekking around.